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| author | Leonard Chan <leonardchan@google.com> | 2020-08-11 18:03:07 -0700 |
|---|---|---|
| committer | Leonard Chan <leonardchan@google.com> | 2020-10-14 12:31:21 -0700 |
| commit | 683b308c07bf827255fe1403056413f790e03729 (patch) | |
| tree | 15fbfdfa7757f070e9859f4d14451a2d9e7aa44d /llvm/lib/CodeGen/MachineFunctionSplitter.cpp | |
| parent | 77638a5343d5b4c1a87ec2b7fb3671ccb108a059 (diff) | |
| download | llvm-683b308c07bf827255fe1403056413f790e03729.zip llvm-683b308c07bf827255fe1403056413f790e03729.tar.gz llvm-683b308c07bf827255fe1403056413f790e03729.tar.bz2 | |
[clang] Add -fc++-abi= flag for specifying which C++ ABI to use
This implements the flag proposed in RFC http://lists.llvm.org/pipermail/cfe-dev/2020-August/066437.html.
The goal is to add a way to override the default target C++ ABI through
a compiler flag. This makes it easier to test and transition between different
C++ ABIs through compile flags rather than build flags.
In this patch:
- Store `-fc++-abi=` in a LangOpt. This isn't stored in a
CodeGenOpt because there are instances outside of codegen where Clang
needs to know what the ABI is (particularly through
ASTContext::createCXXABI), and we should be able to override the
target default if the flag is provided at that point.
- Expose the existing ABIs in TargetCXXABI as values that can be passed
through this flag.
- Create a .def file for these ABIs to make it easier to check flag
values.
- Add an error for diagnosing bad ABI flag values.
Differential Revision: https://reviews.llvm.org/D85802
Diffstat (limited to 'llvm/lib/CodeGen/MachineFunctionSplitter.cpp')
0 files changed, 0 insertions, 0 deletions